Senior Backend & Data Engineer (Python, FastAPI, Snowflake) Remote

Role - Senior Backend & Data Engineer (Python, FastAPI, Snowflake) Location - Remote Mandatory Areas: Python background, async programming, FastAPI, API integrations, Data engineering & SQL, Pydantic and testing framework Must have Skills – Python, FastAPI, Pydantic Skill 1 – 7Yrs of Exp – Async Programming, Testing Framework Skill 2 – 7Yrs of Exp – SQL Skill 3 – 5Yrs of Exp in Telecom Domain Graph Algorithms & Pattern Processing • NetworkX o Connected components o Transitive closure o Graph construction • Alarm correlation logic • Regex engineering o IPv4 / IPv6 o Network interface extraction o CI/entity extraction • Entity classification patterns \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Backend Engineering (FastAPI Stack) • FastAPI o Routing o Dependency injection o Middleware o Streaming responses (SSE) • Async-first backend design • Incremental/streaming LLM responses • Background tasks & concurrency control • Pydantic request/response models \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Frontend (React Agent UI) • React 18/19 o Hooks o Context API o Performance optimization • TypeScript • MSAL browser authentication • JWT handling • Streaming fetch / incremental rendering • Real-time agent UI updates \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Testing & Code Quality • pytest o Fixtures o Parametrize o Markers • unittest.mock (patch, MagicMock) • Ruff • pre-commit hooks • SAST integration \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Nice-to-Haves • Ray (distributed execution) • Columnar performance tuning • Network operations domain knowledge • NOC / alarm correlation familiarity